VISA write buffer

[kdm7]

Hello,

What data do we write in the write buffer?

If I only need to get information through serial ports, then, why should I write data in write buffer and then read?

I need to access data from the internet and through serial ports. How do I do using VISA?

[Dennis_Knutson]

If the instrument requires a command to take a reading, that is what you would write. It's all instrument specific. Some instruments just stream data and then you would not need a write. It all boils down to RTFM.

You can't use VISA as a web browser.

[kdm7]

Okay

I need to monitor a system which is far away through internet. I know I have to use VISA, but what does VISA actually do? How do I get the information to my PC?

[Dennis_Knutson]

Is it on a local network? Then you can use VISA. Is it a web page? Then you can't use VISA.

VISA is an api that abstracts the low level physical connections such as serial, gpib, tcp/ip, etc.

[kdm7]

It is on a local network. 

If the write buffer contains commands to take reading, then when am I actually reading data from LAN ? Is it through VISA read?

[Dennis_Knutson]

Yes.

[kdm7]

Okay thanks

[harbi]

hi

how i write (pwm)by visa labview

thanks

[Dennis_Knutson]

You've hijacked an unrelated thread with a question that makes no sense. Please start a new thread and really explain what you are asking.